一个排序，用代码实现

[xiaotupansy]

学生，成绩做倒序排，成绩相同，按年龄小的排前，年龄也同，按姓名作排序，不用数据库，直接用代码来实现

[王集鹄]

姓名？成绩？年龄？神仙？妖怪...
是怎么保存的？
文本文件？结构数组？

你是不是看到很多问号？

[xiaotupansy]

据说使用hashtable

[liujia_0421]

按成绩降序,年龄升序,姓名升序??

for exampe;

class Program
{
static void Main(string[] args)
{
List<Student> array = new List<Student>();
Student st = new Student("aaa", 23, 88);
array.Add(st);
st = new Student("bbb", 24, 90);
array.Add(st);
st = new Student("fff", 21, 88);
array.Add(st);
st = new Student("ddd", 21, 88);
array.Add(st);
Console.WriteLine("Before Sort:");
foreach (Student s in array)
{
Console.WriteLine(s.sname + "\t" + s.sage + "\t" + s.score);
}
array.Sort();
Console.WriteLine("After Sort:");
foreach (Student s in array)
{
Console.WriteLine(s.sname + "\t" + s.sage + "\t" + s.score);
}


}
}
struct Student : IComparable
{
public string sname;
public int sage;
public int score;
public Student(string sname, int sage, int score)
{
this.sname = sname;
this.sage = sage;
this.score = score;
}
public int CompareTo(object obj)
{
Student st = (Student)obj;
if (this.score != st.score)
return st.score.CompareTo(this.score);
if (this.sage != st.sage)
return this.sage.CompareTo(st.sage);
if (this.sname != st.sname)
return this.sname.CompareTo(st.sname);
return 1;
}
}

Before Sort:
aaa 23 88
bbb 24 90
fff 21 88
ddd 21 88
After Sort:
bbb 24 90
ddd 21 88
fff 21 88
aaa 23 88

[soonsnipe]

楼上正解

[xiaotupansy]

to liujia_0421(SnowLover)
非常感谢！
老大你帮我解决不少问题了